# STC SA7819SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC manual electric trim system Model ST-493
- Applied: June 19, 1992
- Status date: June 26, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/a2/cb/a2cb0734c3b74e9d5bffcceb08b57dbf7834223e36e148a8efe2d16cfdda0474
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6EF041DFAB8D2FCF85256CC20056A4C4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7819SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Raytheon Aircraft Company 35-C33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company F33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Sad Sons & Baia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA7819SW-D This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, TX 76067 sarlifes that the change in the lyps desiger for the following product with the limitations and conditions thomfor as specifed horeon meals the aircorthiness reguirements of Port 3 of the CIVil Air Rogulations Original Product Typo Certificato Number: 3A15 Make: BEECH Model: 35-C33 and F33C Description of Type Design Change:

Installation of S-TEC Manual Electric Trim System, Model ST-493, according to Bulletin No. 593, dated 6-18-92 and Master Drawing List No. 92566, dated 6-18-92 and/or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89977, dated 6-26-92 is required and/or later FAA Approved revisions of the above Supplement.

2. Compatibility of this modification with other previously approved modifications must be determined by the installer.

Thomas (Tille)

This certificate may be transferred in accordance with FAR 21.17.

**PAA 1080 8110-2 (10-68)**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number - to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) trom (Name of grantor) (Print or type) (Address of grantor) (Number and strees) ( City. State, and ZIP code!

Signature of grantor (In ink):

## Every issue (1)

- June 26, 1992: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a2/cb/a2cb0734c3b74e9d5bffcceb08b57dbf7834223e36e148a8efe2d16cfdda0474)

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